#!/usr/bin/env ruby

require_relative '../common'

class Day08 < Day
  def part1
    count_code_characters - count_real_characters
  end

  def part2
    new_input = input.map do |row|
      "\"#{row.gsub(/(["\\])/, '\\\\\1')}\""
    end

    new_input.map(&:size).sum - count_code_characters
  end

  private

  def count_code_characters
    input.map(&:size).sum
  end

  def count_real_characters
    input.map { |row| row.gsub(/\\\\|\\"|\\x[0-9a-f]{2}/, '_').size - 2 }.sum
  end
end

Day08.run